S
M
T
W
T
F
S
28
65°
50°
29
64°
53°
30
62°
52°
1
67°
50°
2
71°
57°
3
74°
50°
4
75°
48°
5
77°
47°
6
82°
50°
7
72°
50°
8
75°
47°
9
76°
48°
10
77°
49°
11
76°
48°
12
81°
50°
13
80°
51°
14
83°
52°
15
77°
53°
16
72°
55°
17
72°
49°
18
77°
52°
19
80°
54°
20
79°
52°
21
78°
54°
22
76°
53°
23
78°
55°
24
73°
55°
25
76°
54°
26
81°
55°
27
80°
56°
28
81°
54°
29
79°
51°
30
81°
54°
31
82°
56°
1
80°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Boston Harbor
Boston Harbor's July 2026 forecast shows daily high temperatures ranging from 71° to 83°, with overnight lows between 47° and 57°. The average high for July is 77° with an average low of 52°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how July weather will actually feel in Boston Harbor. See also: August | September | October.
